8564948439 has 4 divisors (see below), whose sum is σ = 11419931256. Its totient is φ = 5709965624.

The previous prime is 8564948419. The next prime is 8564948443. The reversal of 8564948439 is 9348494658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8564948439 - 2¹³ = 8564940247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8564948419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427491404 + ... + 1427491409.

It is an arithmetic number, because the mean of its divisors is an integer number (2854982814).

Almost surely, 2^8564948439 is an apocalyptic number.

8564948439 is a deficient number, since it is larger than the sum of its proper divisors (2854982817).

8564948439 is a wasteful number, since it uses less digits than its factorization.

8564948439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854982816.

The product of its digits is 29859840, while the sum is 60.

The square root of 8564948439 is about 92547.0066452719. The cubic root of 8564948439 is about 2046.0123505149.

The spelling of 8564948439 in words is "eight billion, five hundred sixty-four million, nine hundred forty-eight thousand, four hundred thirty-nine".